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TOPIC: Re:Head shake.
#298188
BSwift (User)
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Gender: Male Location: NE Oklahoma Birthdate: 1962-04-05
Head shake. 3 Years, 12 Months ago  
As the title suggests, my 05 gets head shake around 50 mph. Not severe but enough to notice. I put a new Dunlop on the front about 800 miles ago and put in Dyna Beads for balancing. I have a Batwing fairing with the factory Silverado Lowers still installed up front. I have a trunk and hard bags on back.
Is this a balance problem? Meaning, too much weight towards the rear of the bike or is this possibly due to the Batwing? Do I need to check the fluid level in each fork leg (no leaks)?
This is really annoying. If I don't have a firm grip on the bars the front end starts shaking and instinctively my butt puckers up. At this rate, I'll need a proctologist and a new seat cover. Got some suggestions?
 
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#298194
huskerbob (User)
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Gender: Male blackshirtbob2010@hotmail.com Location: High Point North Carolina Birthdate: 1957-10-21
Re:Head shake. 3 Years, 12 Months ago  
I have had problems with Dunlop tire run your hand over it if the tread feel uneven cupped that will cause shake, even if it new my dunlops never last long just had front tire 21'' get cupped after 1500 miles and it was balanced like all my tires .Or your front TRIPLE TREE bearing could be bad or need tighten up .Another thing could be wind pushing fairing is it tight? lots to look at I'm sure there will be more opinion to come on front end good luck hope it's a easy fix'''''
 
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#298198
ahamay (User)
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Re:Head shake. 3 Years, 12 Months ago  
Wheel alignment could be your culprit. If you are on a straight road, notice the handle bar position in relation to the front end. I picked my bike up from the dealer and the bars were some what skewed in relation to the forks/front wheel. I made a jig from four inch angle iron and rolled the bike on to it and cinched the the tires in to the jig. I loosened the upper portion of the triple tree adjusted the bars to align them up. Tightened it all back up and problem solved.
 
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#298201
BSwift (User)
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Re:Head shake. 3 Years, 12 Months ago  
I've thought that making the steer stem nut tighter might help and the alignment is really likely to be the issue. The new tire is not cupped and everything is tight.
I hadn't thought about the triple tree making the forks caddywhompass but makes sense, I'll check the rear as well.
In a different thread, a suggestion to use ATF in the forks was mentioned. I've done that for years on my dirtbikes. I've gotten head shake on my dirtbikes but that is usually solved by sliding the forks up or down in the triple tree which you can't do with the R*. I'm also wondering if the suspension is out of balance front to back. If the weight is biased to the rear, this could exagerate head shake if not cause it out right. Guess I'm going to be playing with the suspension for a while.
 
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#298206
ahamay (User)
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Re:Head shake. 3 Years, 12 Months ago  
The markings on the rear swing arms are inaccurate. I heard this from the service manager of the Yamaha shop where I bought my bike. It causes belt wear, belt noise and cupping of the front tire.
 
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Last Edit: 2010/07/25 11:28 By ahamay. Reason: Grammer
 
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